package cn.itcast.bos.web.action.common;

import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.HashMap;
import java.util.Map;
import org.apache.poi.ss.formula.functions.T;
import org.springframework.data.domain.Page;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;

/**
 * 抽取Action的公共代码，简化开发
 * 
 * @author 张立
 * @version 1.0 2017-9-6 20:19:05
 */
public abstract class BaseAction<T> extends ActionSupport implements ModelDriven<T> {

	// 模型驱动
	protected T model;
	
	@Override
	public T getModel() {
		
		return model;
	}
 // 构造器完成model实例化
	public BaseAction(){
		// 构造子类Action对象，获取继承父类型的泛型
		// AreaAction extends BaseAction<Area>
		// BaseAction<Area>
		Type genericSuperclass = this.getClass().getGenericSuperclass();
		ParameterizedType parameterizedType = (ParameterizedType) genericSuperclass;
		Class<T> modelClass = (Class<T>) parameterizedType.getActualTypeArguments()[0];
		try {
			model = modelClass.newInstance();
		} catch (InstantiationException | IllegalAccessException e) {
			e.printStackTrace();
			System.out.println("模型构造失败");
		}
		
	}
	// 接收分页查询参数
		protected int page;
		protected int rows;
	public void setPage(int page) {
		this.page = page;
	}
	public void setRows(int rows) {
		this.rows = rows;
	}
	protected void pushPageDataToValueStack(Page<T> pageData){
		Map<String,Object> result = new HashMap<String,Object>();
		result.put("total",pageData.getTotalElements());
		result.put("rows", pageData.getContent());
		ActionContext.getContext().getValueStack().push(result);
	}
	
	
}
